S
M
T
W
T
F
S
30
74°
54°
31
73°
53°
1
72°
56°
2
73°
55°
3
72°
57°
4
73°
54°
5
74°
54°
6
73°
53°
7
71°
52°
8
72°
51°
9
71°
58°
10
71°
52°
11
69°
51°
12
71°
50°
13
73°
57°
14
75°
52°
15
74°
57°
16
75°
57°
17
75°
56°
18
76°
57°
19
75°
55°
20
75°
51°
21
66°
55°
22
66°
52°
23
67°
55°
24
69°
54°
25
68°
49°
26
70°
45°
27
70°
47°
28
61°
46°
29
61°
47°
30
59°
44°
1
Hist. Avg.
67°
48°
2
Hist. Avg.
66°
47°
3
Hist. Avg.
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smithville
Smithville's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 44° and 58°. The average high for September is 71° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Smithville. See also: October | November | December.
